声强向量法与时延估计法共用同一基阵实现舰船体积目标定向  

Sound Intensity Vector Estimation and Time Delay Estimation Combined to Determine the Bearings of Ship Volume Target

作　　者：石杰[1] 相敬林[1] 罗建[1] 韩鹏[1] 

机构地区：[1]西北工业大学航海学院,陕西西安710072

出　　处：《兵工学报》2007年第5期551-556,共6页Acta Armamentarii

基　　金：国防科技预研基金资助项目(51405020304HK0354)

摘　　要：提出一种非典型形式的声强向量阵—不等间距的空间十字阵,它由空间正交、间距可调的4个声基元组成,便于工程应用;并提出在同一个空间十字阵上联合使用声强向量法和时延估计法对舰船体积目标3亮点部位定向的方法。舰船中部、中后部辐射的低频声源用声强向量法定向;尾部辐射的高频声源用时延估计法定向,共用同一基阵。利用实测的舰船辐射噪声数据进行了计算机仿真以及在半消声室中进行了定向实验,实验结果证明:该方法对体积目标各部位的定向精度达到工程应用的要求,能够对这3个部位进行有效的分辨。The method to determine the bearings of the three highlight sections of a ship based on a non-typical vector sound intensity array was proposed. The array consists of four sensors those are arranged to form spatial cross and adjustable space between the sensors. The bearing of the low frequency noise radiated by the midship and the section between the midship and stern was determined by sound intensity vector. And the bearing of the stern which radiates high frequency noise was determined by time delay estimation. All these methods are based on the same array. The computer simulation and the experiment conducted in a semi-anechoic chamber prove that this method can effectively distinguish the three sections of the ship.

关 键 词：声学 空间十字阵 声强向量阵 时延估计 体积目标 定向 

分 类 号：TB566[交通运输工程—水声工程]